Method of making shingle-strips



F. C. OVERBURY.

METHOD OF MAKING SHINGLE sTmPs.

APPLlCA-TION FILED MAY 14. I915.

Patented May 18, 1920.

Fr H? v UNITED PATENT OFFICE. mnnnnrcx c. OVERBURY, or MONTCLAIR, rinw JERSEY, Assmnon, BY mEsNE ASSIGNMENTS, TO THE FLINTKOTE COMPANY, 015 BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

Mun r01) or MAKING SHINGLE-STBIPS.

Original application filed March 1, 1915, Serial No. 11,392. Patent No. 1,150,298, dated August 17, 1915. Divided and this application filed May 14, 1915. Serial No. 28,162. i

To all whom it may concern:

Be it known that I, FREDERICKYC. OVER- BURY, a citizen of the United states and a resident of Montclair, in the county of Es sex and State of New Jersey, have invented certain new and useful Improvements in Methods of Making Shingle-Strips, of which the following is a specification.

This invention has relation to prepared waterproof weatherproof coverings for roofs and side walls, which, when laid, present the appearance of shingles or tiles.

' ,It has heretofore been proposed to man- .ufacture what are termed shingle strips for this purpose by forming in the central-part of an elongated sheet of waterproofed "felt or like fibrous material a series of transverse slots, and then by severing the sheet \along a line longitudinal thereof and inter- I when laid.

secting the slots, as pointed out in my Letters Patent No. 908,125, dated December 29, 1908. I have found that, where the shingle strips are thus formed, the strips are apt to bulge and [buckle under varying thermal and weather conditions, especially where the strips are relatively long." 1

The object of the present invention is to provide an improved method of making shingle strips, in consequence of which I am able to prev ent the bulging of the strip On the accompanying drawing,

Figure 1 illustrates a sheet of prepared fibrous materialiand shows how the shingle strips are formed therefrom.

Fig. 2 illustrates one of the shingle strips.

Fig. 3 shows a shingle strip having different shaped tabs.

Fig. 4; represents a section on the line 44 of Fig. hon a larger scale.

Inthe manufacture of wool felt, such as I employ for the foundation of my roof covering,"the fibers are in the main arranged longitudinally of the length of the strip or sheet, and, in accordance with the present invention, the shingle strips are cut from the sheet along lines transverse to the longitudinal 'lines of the sheet so that each strip, although it is providedwith a plurality. of tabs or projections which when laid form the appearance of tilesor shin gles, are relatively short, and, because of the arrangement of the fibers transversely of the length thereof, do not bend and buckle when exposed r to varying thermal and weather conditions. The foundation of the strip consists of such wool felt. which is saturated ,or impregnated with the usual waterproofing "composition employed in, the manufacture of prepared weatherproof roofing, such as pitch, asphalt and the like. The sheet of felt, after being impregnated and saturated with waterproofing comterial are indicated at b and c, and the layer of pressed mineral material is indicated at (l. -After an elongated sheet of suitable width has been thus prepared, it is ready for further treatment in accordance with my invention. Between the side edges Specification of LettersQPatent. V v Patenfd May 18, 1920- of the sheet e, I form, by any suitable instrumentalities, a series of pairs of. longitudinal slits f, g which ma be spaced-apart say for example inch. hese slits extend longitudinally of the sheet and'are formed in a row across the sheet as shown in Fig. 1.

lVhat may be termed the rear ends of the slits are connected by a cross slit h, soctl 1at there are formeda series of rearwardly extending tongues i which are connected at their front ends to the main body of the sheet. These rows of tongues are separated.

longitudinally of the sheet, by a distance of say 7 to l0-inches moreor less as circumstances may require. Then, byany suitable cutting tool or other instrumentality, the

sheet 1s severed on the dottedline j, j in Fig. 1, the saidline coinciding with the forward ends of theslits f, g. As a result of thisprocedure, there is formed a series of shin le', strips in, each of which is formed at its front or lower edge with a series of tabs or projections m separated by slots'n, with a straight edge 0 defining its upper or rear end. In these strips, the fibers of the impregnated felt extend mainly in lines approximately parallel to the end edges p, p

laid in parallel overlapping rows, the tend-. ency to buckle and bend is practically elimiof the strips, so that, when the strips are nated. In laying the shingle strips "upon the roof, each row of strips is overlapped by the succeeding higher row with the shingle tabs or projections m of one row either coinciding with or bridging the upper end of the slots n of the next lower row.

It is quite apparent, from the foregoing description, that, by the employment of any suitable cutting instrumentalities, the slits or incisions which are formed in the sheet may be of diverse character, so that the tabs,

instead of being substantially rectangular, may be of other shapes, as shown in Fig. 3 for example. It will be; understood, of course, that the elongated sheet will be fed forwardly longitudinally of its length, so that, after the successive formation of the rows of'slits, the shingle strips are cut successively from the end of thesheet.

Having thus explained the nature of my said invention and described a Way of car rying out the same, although without setting forth all the ways in which it may be practised, what I claim is j 1. The. herein described method of making shingle strips, which consists in forming an elongated sheet of flexible felt impregnated with a bituminous waterproofing compound, and severing said sheet transversely into strips each having between its side edges a plurality of tabs or projections of equal width spaced apart to simulate singles or tiles when said strips are laid in overlapping relation.

2. The herein described method of making shingle strips, which consists in forming an e pregnated with a bituminous waterproofing compound, and severing said sheet transongated sheet of-fiexible felt iming single strips, which consists in forming an elongated sheet of felt impregnated wit a bituminous waterproofing compound, coated with a layer of bituminous, compound and faced with a' layer of crushed,

mineral embedded-in said coating, forming in sald sheet successlve transverse rows of transversely on lines intersecting said slots, thereby to form shingle strips each having between its side edges a series of spaced shingle-like tabs of equal width.

:longitudinal slots and severing said sheet 4. The herein described method of making prepared shingle strips, which consists in forming an elongated sheet of flexible weatherproofed felt, forming a plurality of spaced longitudinal slots in said "sheet of greater width than the thickness of said sheet, and then severing said sheet in lines transverse to and intersecting the ends of said slots.

5. The herein described method of mak' ing prepared shingle strips, which consists in forming an elongated sheet of flexible weatherproofed ro'ofing felt, forming tongues in saidsheet by a series of transverse rows of pairs of longitudinal slits and transverse slits connecting the rearends of each pair of slits, and severing the sheet transversely on lines intersecting the front ends of said pairs of slits simultaneously to cut off the tongues and to form a shingle strip vhaving spaced tabs or projections. f

In testimony whereof I have aflixed my signature.

FREDERICK C. OVERBURY; 

